Gertrude of Brunswick German countess (c.1060–1117) (1060–1117) Parents Immilla of Turin Egbert I, Margrave of Meissen Children Dietrich III. von Katlenburg Gertrude of Northeim Otto III of Northeim Richenza of Northeim Henry II, Margrave of Meissen Siblings Gisela of Schweinfurt Egbert II, Margrave of Meissen Alberada-Bertha von Schweinfurt Judith of Schweinfurt Beatrix von Schweinfurt, Heiress of Schweinfurt Partners Henry I, Margrave of the Saxon Ostmark Diederik II van Katlenburg Henry, Margrave of Frisia